Droplet ejection apparatus

A droplet ejection apparatus, comprising:

• a base;
• a plotting system having a droplet ejection head that ejects functional liquid as a droplet, a carriage that holds the droplet ejection head, and a stage that holds a work at which the droplet is plotted;
• an optical system having a light source that outputs a laser beam and an optical path, which is constituted between the light source and the droplet and through which the laser beam passes to irradiate the droplet;
• and
• a protection cover that protects the droplet ejection head from the laser beam;
• wherein:
• the plotting system and the optical system are established on the base sharing the upper surface of the base as a reference surface, and pattern is plotted and fixed through cooperation control of both systems;
• the optical path includes a third optical path that is substantially parallel to the stage through which the laser beam is irradiated on the droplet horizontally against the stage;
• a side surface of the protection cover is usable as a plane surface for verification of a laser spot position when adjusting the path of the third optical path;
• and
• the droplet is irradiated in midair, before contacting the work.